Blog | Ransomware: The Data Exfiltration and Double Extortion Trends (2022)

Part 3 in a series on Malware

Overview

The Multi-State Information Sharing and Analysis Center’s (MS-ISAC) Cyber Threat Intelligence (CTI) team assesses it is highly likely ransomware groups will continue to steal and post victim data throughout 2021, as an added revenue generator and double extortion tactic. By threatening to publicly post confidential data, ransomware groups are placing additional pressure on victims to pay out the ransom for the promise of outright deleting or keeping stolen data confidential. Besides publicly posting data, ransomware groups sell stolen data in cybercriminal forums and dark web marketplaces for additional revenue. Data from Chainalysis shows the total amount paid by ransomware victims increased 311% in 2020, amounting to nearly $350 million worth of cryptocurrency. [1] In one high-profile example, a public university reportedly paid over $1 million in Bitcoin to recover its encrypted files and delete the stolen data. [2]

Throughout 2020, the MS-ISAC CTI team observed ransomware groups increasingly turning to double extortion attempts with stolen data, while maintaining the traditional network encryption and ransom routine. Ransomware groups continue to exfiltrate data during intrusions, mimicking the Maze ransomware group’s tactic of publishing stolen victim data, which made headlines in late 2019.

Threat to SLTTs

The recent trend of CTAs using data exfiltration as leverage over State, Local, Tribal, and Territorial (SLTT) victims is especially impactful to organizations housing sensitive information, such as public healthcare entities and K-12 school districts. These public sector targets remain popular because of their essential services and public sensitivity on protecting children and the ill. Thus, these organizations feel an internal sense of urgency joined with public pressure to resume operations quickly, which cyber threat actors (CTAs) are taking advantage of via higher ransom amounts.

  • Healthcare entities are especially vulnerable to data exfiltration as many can only devote limited resources to network security. Phishing is a prominent attack vector used by ransomware groups to gain initial access to a victim’s network. Partly due to the fast-paced and critical work environment of most healthcare entities, CTAs are able to maintain phishing operations as a low-risk high reward attack vector. Ransoming the healthcare sector also enables CTAs to leverage critical care services and vital data to pressure healthcare providers to pay the ransom. [3] In September 2020, CTAs breached and exfiltrated data from a university hospital with folders containing “appointments, archives, notice of claims, agreements, litigation files, employment and labor, and credentialing and discipliningof physicians, among others.” [4] Leaked protected health information (PHI) is a serious concern for healthcare organizations that may face litigation as a consequence of improperly securing PHI data in violation of HIPAA.
  • K-12 school districts represent another popular SLTT target for ransomware groups. These institutions tend to have limited IT and cybersecurity resources and often a flat network architecture. In 2020, many K-12 school districts were infected with ransomware and often exhibited higher tendencies to simply pay the ransom. The noted lack of network segmentation makes it easier for ransomware groups to move laterally in K-12 networks to quickly harvest large amounts of data, which is then exfiltrated off the network and encrypted on premise. School districts of various sizes were victims of these types of attacks. CTAs were also observed posting data to the dark web, which potentially included grades, financial, medical, and disciplinary information on students.

If an organization is initially unwilling to pay the ransom, CTAs can use data leak sites to post portions of the data, attempting to increase their leverage and potentially shame the victim. CTAs might also sell or auction data if an organization does not pay the ransom. Popularized by REvil, some ransomware CTAs have engaged in targeting former victims who have already paid ransoms. In these cases, the CTAs request additional payment and threaten to publicly post the same data they allegedly deleted from the first attack after the ransom was paid. In rare cases, the CTAs will still post the data even if the ransom is paid twice.

Exfiltration Techniques

Most ransomware infections begin through a simple initial attack vector, such as a phishing email or exploiting unsecured Remote Desktop Protocol (RDP). After initial access, cybercriminals use malware, open-source penetration testing tools, and living-off-the-land techniques to escalate privileges and move laterally across the victim’s network. The increased network access allows CTAs to target critical data for exfiltration and encryption. The typical infection process is depicted below.

Blog | Ransomware: The Data Exfiltration and Double Extortion Trends (1)

(Video) Double Extortion Attacks: Avoiding the Pitfalls of the New Norm

According to the MITRE ATT&CK Framework, the following techniques are used to exfiltrate data (please see the recommendations section for best practices stemming from these tactics):

  • Automated Exfiltration (T1020): Using automated methods, such as traffic duplication, to exfiltrate data. Used to streamline sending data from an infected system to a server.
  • Data Transfer Size Limits (T1030): Used to exfiltrate data in fixed-size chunks rather than as a whole. Commonly used to avoid network data transfer threshold alerts from triggering.
  • Exfiltration Over Alternative Protocol (T1048): Used as an alternative to exfiltrating data over typical command and control protocols, such as through symmetric, asymmetric, or unencrypted/obfuscated network protocols. Used when CTAs want to send data using an alternative route.
  • Exfiltration Over C2 Channel (T1041): Exfiltrating data using an existing command and control channel. Most often used to encode the data as normal communications, minimizing outbound connections to avoid detection.
  • Exfiltration Over Other Network Medium (T1011): Technique used to exfiltrate data through network mediums, such as Bluetooth and Cellular Data. Used if the other network options are inaccessible or not properly geared to exfiltrate data without risk of detection.
  • Exfiltration Over Physical Medium (T1052): Using physical means of exfiltrating data, such as USB. Most often used as the final exfiltration point or to access disconnected systems.
  • Exfiltration Over Web Service (T1567): Using a legitimate web service to exfiltrate data. Helps reduce the risk of any suspicious network detections.
  • Scheduled Transfer (T1029): Used to exfiltrate data at specific times or intervals. Most often used to combine data transfer traffic with normal activity to avoid detection.
  • Transfer Data to Cloud Account (T1537): When exfiltrated data is transferred from one cloud environment to another and often to avoid risk of network-based exfiltration detections.

Ransomware Variants Using Exfiltration

  • Posting Data on Leak Sites: Avaddon, Ako, Clop, Conti, Darkside, DoppelPaymer, Egregor, Everest, Lockbit*, Light*, Maze, Mespinoza, MountLocker, Nefilim, Nemty*, Netwalker, Pay2Key, Ragnarok, RagnarLocker, RansomeEXX, REvil, Sekhmet*, Snatch*, Suncrypt [5,6,7,8,9,10,11]
  • Posting/Publicizing Data Leaks on Underground Forums: Avaddon, Ako, Darkside, Egregor, Kupidon, Maze, Nemty, REvil, Sekhmet, Suncrypt [5,6,9,10]
  • Publicizing Data Leaks on Twitter: DoppelPaymer, Maze, RagnarLocker*, Snatch* [5,7,8]
  • Selling/Auctioning data: DoppelPaymer, Maze, REvil [5,8]

* denotes a currently inactive site or Twitter Handle

Recommendations

The MS-ISAC does not encourage victims to pay the ransom, as it further incentivizes this criminal behavior, but understands this can sometimes be the only available option. Organizations that suffer a ransomware attack should anticipate data exfiltration occurred prior to the ransom note. The MS-ISAC recommends implementing proper data management, behavioral analytics to track access to data, and access controls, paying special attention to the most critical or sensitive data. Actions include mapping the organization’s data spread and structure, properly classifying it, encrypting known sensitive data at rest and in transit, and adhering to the principle of least privilege.

The MS-ISAC also generally encourages SLTTs to implement a defense-in-depth strategy to combat all types of malicious cyber activity, as there is no single magic bullet. Organizations should consider adhering to the CIS Controls , leveraging the CIS Benchmarks, and reviewing MS-ISAC and CISA services. In addition, the MS-ISAC urges SLTTs to reference the dual seal CISA/MS-ISAC Ransomware Guide.

  1. Backups
    • Maintaining offline encrypted backups and regularly testing restoral procedures.
  1. Incident Response & Communications Plan
    • Create, maintain, and exercise a basic cyber incident response plan and associated communications plan that includes response and notification procedures.
  1. Data Sprawl
    • Identify and track different types on systems. Catalog all the locations where sensitive data and other intellectual property is stored and who has privileges to access the data. Once complete, implement robust access control policies.
  1. Network Segmentation
    • Employ logical or physical network segmentation, separating various business units or departments.
  1. Defend Against Initial Infection Vectors
    • Malicious emails
      • Implement email filtering.
      • Conduct regular end-user awareness trainings on how to identify and respond to suspicious emails.
      • Implement Domain-based Message Authentication, Reporting and Conformance (DMARC) policy and verification. DMARC builds on the widely deployed Sender Policy Framework and Domain Keys Identified Mail protocols, adding a reporting function for senders and receivers.
    • Remote Access and Internet-Facing Vulnerabilities
      • Conduct regular vulnerability scanning.
      • Regularly patch and update software and operating systems.
      • Secure RDP and other remote desktop services.
    • Managed Service Providers (MSPs)
      • Consider the risk management and cyber hygiene practices of third parties or managed service providers (MSPs) your organization uses. MSPs have been a major inlet for CTAs seeking ransom client organizations.
  1. Detection and Logs
    • Ensure antimalware software and signatures are up to date. Ensure automatic updates for these defenses are turned on.
    • Consider implementing an intrusion detection system (IDS). The MS-ISAC encourages SLTT organizations to look into procuring and deploying an Albert IDS system to enhance a defense-in-depth strategy. Learn more about Albert.
    • Consider implementing other detection defenses, such as an intrusion prevention system (IPS) or an Endpoint Detection and Response (EDR) solution.
    • CISA and the Center for Internet Security (CIS) are teaming up with Akamai to provide a Malicious Domain Blocking and Reporting (MDBR) service at no cost to members of the MS-ISAC and EI-ISAC. To sign up for MDBR here.
    • Baseline and analyze network activity over a period of months to determine behavioral patterns. Distinguishing normal activity from anomalous network activity is a major step in detecting malicious network activity.

MITRE Tactic-Specific Recommendations:

Automated Exfiltration (T1020)

    • Use best practices for authentication protocols, such as Kerberos. (Protect Countermeasure)
    • Ensure web traffic that can contain credentials is protected via SSL/TLS. (Protect Countermeasure)
    • Ensure that all wired or wireless traffic is encrypted appropriately. (Protect Countermeasure)

Data Transfer Size Limits (T1030)

(Video) Double Extortion Ransomware Webinar with Ubiq & DNS Filter

    • Deploy network-based Intrusion Prevention Systems (IPS) to block malicious network traffic at each of the organization’s network boundaries. (Protect Countermeasure)

Exfiltration Over Alternative Protocol (T1048)

    • Ensure administrators use a dedicated machine for all administrative tasks or tasks requiring administrative access. The machine should not be used for reading e-mail, composing documents, or browsing the internet. (Protect Countermeasure)
      • Create a separate wireless network for personal or untrusted devices. Enterprise access from this network should be treated as untrusted and filtered and audited accordingly.
    • Deploy network-based Intrusion Prevention Systems (IPS) to block malicious network traffic at each of the organization’s network boundaries. (Protect Countermeasure)
    • Decrypt all encrypted network traffic at the boundary proxy prior to analyzing the content. However, the organization may use allow-lists of allowed sites that can be accessed through the proxy without decrypting the traffic. (Detect Countermeasure)
      • Deny communication over unauthorized TCP or UDP ports or application traffic to ensure that only authorized protocols are allowed to cross the network boundary of the network at each of the organization’s network boundaries.

Exfiltration Over C2 Channel (T1041)

    • Deploy network-based Intrusion Prevention Systems (IPS) to block malicious network traffic at each of the organization’s network boundaries. (Protect Countermeasure)

Exfiltration Over Other Network Medium (T1011)

    • Maintain standard, documented security configuration standards for all authorized network devices. (Protect Recommendation)

Exfiltration Over Physical Medium (T1052)

    • Remove sensitive data or systems not regularly accessed by the organization from the network. These systems shall only be used as standalone systems (disconnected from the network) by the business unit needing to occasionally use the system or completely virtualized and powered off until needed. (Protect Countermeasure)
    • Utilize application allow-listing technology on all assets to ensure that only authorized software executes and all unauthorized software is blocked from executing on assets. (Protect Countermeasure)
      • Ensure that unauthorized software is either removed or the inventory is updated in a timely manner.
      • The organization’s application allow-listing software must ensure that only authorized software libraries (such as *.dll, *.ocx, *.so, etc.) are allowed to load into a system process.
      • Uninstall or disable any unauthorized browser or email client plugins or add-on applications.

Exfiltration Over Web Service (T1567)

    • Restrict use of certain websites, blocking downloads/attachments, blocking JavaScript, restrict browser extensions, etc. (Protect Countermeasure)

Scheduled Transfer (T1029)

(Video) Nefilim Ransomware Operators: Who Do They Attack and How Do They Do It?

    • Deploy network-based Intrusion Prevention Systems (IPS) to block malicious network traffic at each of the organization’s network boundaries. (Protect Countermeasure)

Transfer Data to Cloud Account (T1537)

    • Deploy network-based Intrusion Prevention Systems (IPS) to block malicious network traffic at each of the organization’s network boundaries. (Protect Countermeasure)
      • Deny communications with known malicious or unused Internet IP addresses and limit access only to trusted and necessary IP address ranges.
    • Use an automated tool, such as host-based Data Loss Prevention, to enforce access controls to data even when data is copied off a system. (Protect Countermeasure)
    • Protect all information stored on systems with file system, network share, claims, application, or database specific access control lists. These controls will help enforce need-to-know policies. (Protect Countermeasure)
    • Establish and follow an automated process for revoking system access by disabling accounts immediately upon termination or change of responsibilities. Disabling these accounts, instead of deleting accounts, allows preservation of audit trails. (Protect Countermeasure)
      • Disable any account that cannot be associated with a business process or owner.

Read Other Articles In this Series:

  • TrickBot: Not Your Average Hat Trick – A Malware with Multiple Hats
  • Mimikatz: The Finest in Post-Exploitation

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References

[1]: https://blog.chainalysis.com/reports/ransomware-ecosystem-crypto-crime-2021

[2]:https://www.zdnet.com/article/university-of-california-sf-pays-ransomware-hackers-1-14-million-to-salvage-research/

[3]:https://healthitsecurity.com/news/maze-ransomware-hackers-extorting-providers-posting-stolen-health-data

[4]:https://healthitsecurity.com/news/ransomware-hacking-groups-post-data-from-5-healthcare-entities

(Video) Lorenz Ransomware Intrusion: Understanding Your Risk

[5]:https://www.bleepingcomputer.com/news/security/new-avaddon-ransomware-launches-in-massive-smiley-spam-campaign/

[6]:https://www.zerofox.com/blog/team-snatch-data-breach/

[7]:https://bleepingcomputer.com/news/security/doppelpaymer-ransomware-sells-victims-data-on-darknet-if-not-paid/

[8]:https://www.bleepingcomputer.com/news/security/darkside-new-targeted-ransomware-demands-million-dollar-ransoms/

[9]:https://www.bleepingcomputer.com/news/security/nemty-ransomware-to-start-leaking-non-paying-victims-data/

[10]:https://research.checkpoint.com/2020/pay2key-the-plot-thickens/

(Video) All About Ransomware

[11]:https://www.bleepingcomputer.com/news/security/new-avaddon-ransomware-launches-in-massive-smiley-spam-campaign/

FAQs

Why is data exfiltration such an important problem? ›

Successful data exfiltration attacks can have disastrous consequences, leading to loss of valuable intellectual property and other sensitive information, costly incident response efforts, information misuse or abuse, loss of customer trust, brand or reputational damage, legal or regulatory issues, and big ransom ...

Could data exfiltration replace ransomware? ›

The findings of the State of Data Exfiltration & Extortion Report indicate that legacy technologies are no match for ever-evolving ransomware tactics.

What is data exfiltration and how can it be prevented? ›

Data exfiltration can occur due to the actions of malicious or compromised actors, or accidentally. To reduce the risk of data exfiltration, organizations must integrate security awareness and best practices into their culture.

Which of the following is an example of data exfiltration? ›

Data exfiltration can involve the theft of many types of information, including: Usernames, passwords, and other credentials. Confidential company data, such as intellectual property or business strategy documents. Personal data about your customers, clients, or employees b.

What causes data exfiltration? ›

External attack: The most common source of data loss is email, and phishing is the most common technique used. These attacks are typically targeted, with the objective of gaining access to a network or machine to locate and copy specific data.

What is data exfiltration in cyber security? ›

Data exfiltration (aka “data extrusion”) is the unauthorized transfer of data from a computer. The transfer of data can be manual by someone with physical access to the computer or automated, carried out through malware over a network.

How do hackers exfiltrate data? ›

The hackers' exfiltration methods for stealing data include transferring the data over their command and control (C&C) channel or an alternate channel and may also involve putting size limits on the transmission.

What is exfiltration ransomware? ›

Exfiltration Techniques

After initial access, cybercriminals use malware, open-source penetration testing tools, and living-off-the-land techniques to escalate privileges and move laterally across the victim's network.

What is scareware in cyber security? ›

Scareware is a type of malware attack that claims to have detected a virus or other issue on a device and directs the user to download or buy malicious software to resolve the problem. Generally speaking, scareware is the gateway to a more intricate cyberattack and not an attack in and of itself.

What is the most common type of data exfiltration that organizations currently experience? ›

Most common data exfiltration behaviors during insider threats in the U.S. 2020. A 2020 study revealed that e-mail forwarding to a personal e-mail account was the most common method of sensitive data exfiltration during insider incidents.

What are some effective practical strategies to detect data exfiltration attacks? ›

How to prevent data exfiltration: 8 best practices
  • Block unauthorized communication channels.
  • Prevent phishing attacks.
  • Systematically revoke data access for former employees.
  • Educate employees.
  • Identify and redact sensitive data.
  • Set a clear BYOD policy.
  • Identify malicious and unusual network traffic.
9 Jun 2020

What is the most common method or way of exfiltration of data information? ›

In most cases, it is performed via email, such as phishing. Data can be employee information, customer databases, intellectual property, payment card details, Personally Identifiable Information (PII), or other financial information.

How common is data exfiltration? ›

Data exfiltration is an unauthorized transfer of information—typically sensitive data—from one system to another. It's one of the most common cybercrimes and is bad news for your company and your clients. According to the 2020 Internet Crime Report by the FBI, a successful cyberattack happens every 1.12 seconds.

What is the name of the process that exfiltrated data? ›

Data exfiltration occurs when malware and/or a malicious actor carries out an unauthorized data transfer from a computer. It is also commonly called data extrusion or data exportation.

What is the difference between exfiltration and extraction? ›

In military tactics, extraction (also exfiltration or exfil) is the process of removing personnel when it is considered imperative that they be immediately relocated out of a hostile environment and taken to an area either occupied or controlled by friendly personnel.

What Window protocol is commonly used for data exfiltration? ›

One means of data exfiltration that might be considered “old school” is the use of the file transfer protocol (FTP). Most users may not be aware, but Microsoft systems ship with a native, command line FTP utility, ftp.exe.

Which of the following measures best mitigates the risk of exfiltration during a cyberattack? ›

Protection techniques to handle this threat:

Configure network email filtering tools to detect malicious emails and restrict unauthorized attachments in your organization. Implement corporate data security policies. Provide employees with security awareness training. Block access to unsanctioned email platforms.

What is DNS data exfiltration? ›

DNS data exfiltration is a way to exchange data between two computers without any direct connection. The data is exchanged through DNS protocol on intermediate DNS servers. During the exfiltration phase, the client makes a DNS resolution request to an external DNS server address.

What type of security threat is the exportation of data how can your prevent it? ›

Data exfiltration is a security breach during which data is transferred from your systems or devices by an unauthorized user. It is sometimes also called data theft, data exportation or data extrusion.

Which is the data protection process that prevents a suspicious data request from being completed? ›

Blocking prevents a suspicious data request from being completed. This request may be to view, change, add or delete sensitive information. Blocking is fine grained and that it pertains to individual requests.

What is a data breach? ›

A data breach is an incident where information is stolen or taken from a system without the knowledge or authorization of the system's owner. A small company or large organization may suffer a data breach.

What is lateral movement in cyber security? ›

Lateral movement is a technique that adversaries use, after compromising an endpoint, to extend access to other hosts or applications in an organization. Lateral movement helps an adversary maintain persistence in the network and move closer to valuable assets.

Which of the following service is used in the data exfiltration process in the cloud watch? ›

Answer. AWS CloudTrail along with AWS Lambda is the service use to detect Data Exfiltration.

What is the likelihood that a ransomware has exfiltrated data? ›

Data exfiltration is an increasingly common aspect of ransomware attacks. In 2020, for example, research by Emisoft estimated around one in ten such incidents included a data exfiltration element.

What is ransomware and examples? ›

Ransomware is a type of malware (malicious software) used by cybercriminals. If a computer or network has been infected with ransomware, the ransomware blocksaccess to the system or encrypts its data. Cybercriminals demand ransom money from their victims in exchange for releasing the data.

Do backups protect against ransomware? ›

You should assume that at some point in time you will fall victim to a ransomware attack. One of the most important steps you can take to protect your data and avoid paying a ransom is to have a reliable backup and restore plan for your business-critical information.

What is scareware with example? ›

Scareware in the News

They change techniques often. For example, some hackers now use a fake alert to warn users of an imaginary threat, and these users are encouraged to download malware directly from an app store, not just by clicking a button. Other scareware threats use old-school techniques.

How do you identify scareware? ›

Here are a few common signs scareware is downloaded on your devices: Your device is running slower than usual. You're unable to install or use legitimate cybersecurity software. Your screen is teeming with annoying pop-up ads.

What is BlackCat ransomware? ›

In its FLASH alert, the FBI explained that BlackCat aka "AlphaV" ransomware gains initial access to a targeted system using compromised user credentials. It leverages that access to compromise user and admin accounts in the Active Directory.

What is DNS tunneling? ›

DNS tunneling involves abuse of the underlying DNS protocol. Instead of using DNS requests and replies to perform legitimate IP address lookups, malware uses it to implement a command and control channel with its handler. DNS's flexibility makes it a good choice for data exfiltration; however, it has its limits.

What is exfiltration over c2 channel? ›

Adversaries may steal data by exfiltrating it over an existing command and control channel. Stolen data is encoded into the normal communications channel using the same protocol as command and control communications.

What are the different types of insider threats? ›

Here are the six most common types of insider threats:
  • Negligent workers. Many organizations focus their insider threat management programs on addressing insiders with malicious intent; however, negligence is more common. ...
  • Departing employees. ...
  • Security evaders. ...
  • Malicious insiders. ...
  • Inside agents. ...
  • Third party partners.

What is Siem stand for? ›

Security information and event management, SIEM for short, is a solution that helps organizations detect, analyze, and respond to security threats before they harm business operations.

Which portal is accessed for data loss prevention incidents? ›

MVISION ePO: A cloud-based portal for managing DLP violations and reporting incidents.

Why is data exfiltration such an important problem? ›

Successful data exfiltration attacks can have disastrous consequences, leading to loss of valuable intellectual property and other sensitive information, costly incident response efforts, information misuse or abuse, loss of customer trust, brand or reputational damage, legal or regulatory issues, and big ransom ...

Which of the following is an example of data exfiltration? ›

Data exfiltration can involve the theft of many types of information, including: Usernames, passwords, and other credentials. Confidential company data, such as intellectual property or business strategy documents. Personal data about your customers, clients, or employees b.

What protocol was used to exfiltrate data to the external server? ›

File Transfer Protocol (FTP)

Although it does not provide any sort of integrity protection, FTP is generally a reliable protocol for transferring large files.In order to exfiltrate data over FTP, an attacker must be able to authenticate to an external FTP server from a compromised host within an organization's network.

How do hackers exfiltrate data? ›

The hackers' exfiltration methods for stealing data include transferring the data over their command and control (C&C) channel or an alternate channel and may also involve putting size limits on the transmission.

What are the ways that data exfiltration can be tackled in the multi cloud environment? ›

Preventing Data Exfiltration
  • Outbound mail.
  • Downloads to insecure devices.
  • Uploads to external services.
  • Insecure cloud behavior.
  • Enforcing compliance with security policies.
  • Identification and redaction of sensitive data.
  • Rogue administrators.
  • Employee terminations.

What is malware exfiltration? ›

Exfiltration Techniques

After initial access, cybercriminals use malware, open-source penetration testing tools, and living-off-the-land techniques to escalate privileges and move laterally across the victim's network.

What causes data exfiltration? ›

External attack: The most common source of data loss is email, and phishing is the most common technique used. These attacks are typically targeted, with the objective of gaining access to a network or machine to locate and copy specific data.

What are some effective practical strategies to detect data exfiltration attacks? ›

How to prevent data exfiltration: 8 best practices
  • Block unauthorized communication channels.
  • Prevent phishing attacks.
  • Systematically revoke data access for former employees.
  • Educate employees.
  • Identify and redact sensitive data.
  • Set a clear BYOD policy.
  • Identify malicious and unusual network traffic.
9 Jun 2020

What is the most common type of data exfiltration that organizations currently experience? ›

According to McAfee's research cited above, the most common data exfiltration methods at organizations include: Database leaks. Network traffic. File shares.

What is the most common method or way of exfiltration of data information? ›

In most cases, it is performed via email, such as phishing. Data can be employee information, customer databases, intellectual property, payment card details, Personally Identifiable Information (PII), or other financial information.

How do you protect data exfiltration with azure Databricks to help ensure cloud security? ›

  1. Step 1: Deploy Azure Databricks Workspace in your virtual network. The default deployment of Azure Databricks creates a new virtual network (with two subnets) in a resource group managed by Databricks. ...
  2. Step 2: Set up Private Link Endpoints. ...
  3. Step 3: Set up External Hive Metastore. ...
  4. Step 4: Deploy Azure Firewall.
27 Mar 2020

What is the most common type of data exfiltration that organizations currently experience? ›

According to McAfee's research cited above, the most common data exfiltration methods at organizations include: Database leaks. Network traffic. File shares.

How does ransomware exfiltrate data? ›

Exfiltration Techniques

After initial access, cybercriminals use malware, open-source penetration testing tools, and living-off-the-land techniques to escalate privileges and move laterally across the victim's network. The increased network access allows CTAs to target critical data for exfiltration and encryption.

What type of security threat is the exportation of data how can your prevent it? ›

Data exfiltration is a security breach during which data is transferred from your systems or devices by an unauthorized user. It is sometimes also called data theft, data exportation or data extrusion.

How do you protect data exfiltration with azure Databricks to help ensure cloud security? ›

  1. Step 1: Deploy Azure Databricks Workspace in your virtual network. The default deployment of Azure Databricks creates a new virtual network (with two subnets) in a resource group managed by Databricks. ...
  2. Step 2: Set up Private Link Endpoints. ...
  3. Step 3: Set up External Hive Metastore. ...
  4. Step 4: Deploy Azure Firewall.
27 Mar 2020

What is the most common method or way of exfiltration of data information? ›

In most cases, it is performed via email, such as phishing. Data can be employee information, customer databases, intellectual property, payment card details, Personally Identifiable Information (PII), or other financial information.

How do hackers exfiltrate data? ›

The hackers' exfiltration methods for stealing data include transferring the data over their command and control (C&C) channel or an alternate channel and may also involve putting size limits on the transmission.

What is the likelihood that a ransomware has exfiltrated data? ›

Data exfiltration is an increasingly common aspect of ransomware attacks. In 2020, for example, research by Emisoft estimated around one in ten such incidents included a data exfiltration element.

What is ransomware and examples? ›

Ransomware is a type of malware (malicious software) used by cybercriminals. If a computer or network has been infected with ransomware, the ransomware blocksaccess to the system or encrypts its data. Cybercriminals demand ransom money from their victims in exchange for releasing the data.

Do backups protect against ransomware? ›

You should assume that at some point in time you will fall victim to a ransomware attack. One of the most important steps you can take to protect your data and avoid paying a ransom is to have a reliable backup and restore plan for your business-critical information.

Is data exfiltration a crime? ›

Data exfiltration is an unauthorized transfer of information—typically sensitive data—from one system to another. It's one of the most common cybercrimes and is bad news for your company and your clients. According to the 2020 Internet Crime Report by the FBI, a successful cyberattack happens every 1.12 seconds.

What are some effective practical strategies to detect data exfiltration attacks? ›

How to prevent data exfiltration: 8 best practices
  • Block unauthorized communication channels.
  • Prevent phishing attacks.
  • Systematically revoke data access for former employees.
  • Educate employees.
  • Identify and redact sensitive data.
  • Set a clear BYOD policy.
  • Identify malicious and unusual network traffic.
9 Jun 2020

Which of the following measures best mitigates the risk of exfiltration during a cyberattack? ›

Protection techniques to handle this threat:

Configure network email filtering tools to detect malicious emails and restrict unauthorized attachments in your organization. Implement corporate data security policies. Provide employees with security awareness training. Block access to unsanctioned email platforms.

Which two parameters are used to prevent a data breach in the cloud? ›

Monitoring and auditing

This allows companies to know which users and networks are accessing your public cloud data, which helps you assess the risk and address any possible security threats.

What is Databricks in simple terms? ›

Databricks is basically a Cloud-based Data Engineering tool that is widely used by companies to process and transform large quantities of data and explore the data. This is used to process and transform extensive amounts of data and explore it through Machine Learning models.

How secure is Databricks? ›

We provide comprehensive security capabilities to protect your data and workloads, such as encryption, network controls, auditing, identity integration, access controls and data governance. Customers all over the world and across industries rely on the Databricks Lakehouse Platform.

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